LAYER

The ultimate solution to reflective cracking and road surface deformation Tarmac ULTILAYER The Highways Agency and Local A proven alternative to conventional Authorities spend millions of pounds bituminous road surfacing materials, provides enhanced on repair and maintenance work ULTILAYER combines outstanding resistance to reflective every year. flexibility and strength to deliver long-term durability, even on cracking and road Despite this, on difficult sites the the most difficult sites where same problems continue to recur, surface deformation. conventional materials have failed. often within months of the work being completed. ULTILAYER contains a high performance Polymer Modified To meet this challenge Tarmac has Binder (PMB), which is used in developed a high performance combination with carefully designed asphalt that solves two of the most aggregate grading to provide an persistent and costly problems to ultra-high performance asphalt. affect UK road maintenance. ULTIMATE RESULTS HOW IT WORKS ULTILAYER contains a high performance Polymer Modified Binder (PMB), which is used in combination with carefully designed aggregate grading to provide an ultra-high performance asphalt. No need for full depth Faster construction time Less disruption to Enhanced resistance to reflective cracking construction The fewer layers that are removed, road users In most cases only the surface layer the quicker the job can be Faster construction times keep busy Reflective cracking is caused by movement in underlying concrete layers, poor or the surface layer and binder course completed. Replacing two layers roads moving, minimising disruption foundation or movement of the underlying ground. This is particularly a problem needs to be removed and replaced. with one can substantially reduce the and reducing congestion. in evolved carriageways which were not designed to carry today’s heavy traffic programme time. loadings or where concrete has been overlaid with asphalt, but continues to move either through thermal movements or as a result of poor foundations. If left untreated reflective cracks can allow water into the pavement causing further weakening of the Lower construction costs Longer-lasting results More sustainable entire structure.

ULTILAYER is far more cost- Very strong, yet highly flexible, it All Tarmac products are ULTILAYER is more flexible than conventional asphalt due to the elasticity of the effective than deep reconstruction is able to withstand the pressure manufactured in the UK and certified PMB. As a result, the risk of reflective cracking damaging roads that have been and doesn’t require the use of of constant heavy traffic and under BES 6001 Responsible resurfaced or reconstructed with ULTILAYER is significantly reduced. expensive geotextiles. compensate for movement in Sourcing. ULTILAYER is also designed underlying concrete layers and the to be more durable than conventional Improved resistance to pavement deformation ground beneath the road. materials making it a more sustainable Much of the UK’s aging road network was not built for today’s traffic volumes. long-term solution. Increased traffic levels, heavy loads and the use of super single tyres can cause Improved Durability on rutting along the wheelpaths, increasing the risk of accidents for both road users and Roundabouts pedestrians. ULTILAYER provides a stronger, more durable road surface, reducing the risk of 10mm ULTILAYER has a proven deformation reoccurring. record of use on heavily trafficked roundabouts to resist pavement deformation and premature wear. For more details on specific schemes, see the case studies on the Ultilayer page of our website. Oxford and Regent Alderminster Road, “Traditional pavement design and Street, London Warwickshire materials were not viable options. We have achieved a high quality road pavement, which will provide CHALLENGE CHALLENGE long-term value for money.” Severe rutting and cracking has been a Reflective cracking is a persistent problem Rakesh Vaghela. persistent problem for many years due to a on roads across Warwickshire due to Assistant Service Manager for Highways, inherent underground movement, which is combination of very heavy bus trafficking Westminster City Council. and the poor condition of underlying caused by high concentrations of clay in the lean concrete. natural substrate.

SOLUTION SOLUTION

After discussions with Westminster City Half of the contract utilised the traditional Council, a 10mm ULTILAYER binder course approach of 55/10 HRA S/C 100/150pen and a 10mm ULTILAYER surface course and the other half ULTILAYER. After three were selected as an alternative to deeper months, significant cracking was clearly reconstruction, which would have resulted in visible in the HRA. The area surfaced with severe disruption in one of the busiest parts ULTILAYER showed no sign of fatigue. of the city. RESULT RESULT The use of ULTILAYER reduced voids and ULTILAYER has demonstrated excellent increased flexibility, reducing reflective ULTIMATE CONFIDENCE performance to date. Four years after cracking and improving durability. Coventry City Council has it was laid there is no sign of deformation laid over 12,000 tonnes of ULTILAYER on sites across or surface cracking. Warwickshire and Coventry. No two roads are exactly the same. That’s why our Tarmac experts personally inspect and diagnose every project. This enables us to recommend the ultimate solution to meet each client’s exact requirements and budget.

Typical Applications ULTILAYER has the same surface texture and profile as conventional asphalt, and performs equally well when it comes to noise minimisation, spray reduction and skid resistance. As a result it is suitable for a wide range of applications from residential streets, to heavily trafficked roads. ULTILAYER is only available for installation by accredited contractors who have full access to our expert training, advice and technical support or by our own expert Contracting division. This ensures it is laid to the highest EXPERT ADVICE industry standards.

AND SUPPORT ULTILAYER is also available with ULTILOW binder technology, for improved sustainability, better on-site visibility, shorter programme times and earlier reopening to traffic. Ask your local Tarmac representative for details.

Texture Depth Material Application (mm)

ULTILAYER 6 Low traffic volumes, housing estates, car parks 0.8 – 1.0

ULTILAYER 10 Higher traffic volumes, higher stress 1.0 – 1.2

ULTILAYER 14 Higher traffic volumes, higher speed, medium stress 1.2 – 1.4

ULTILAYER 20 Housing estates, deeper construction 100mm inlay alternative* 1.4 – 1.6

*Thickness can be increased up to approximately 100mm, but caution should be taken with regard to ride quality and compaction. SCOTLAND Bellshill Satellite 01698 575 500

NORTH EAST Birtley Regional 0191 492 4000 OUR SUPPORT MORE ANSWERS For more information about Tarmac FAQs ULTILAYER contact your local regional office or visit tarmac.com What is the difference How does it increase Why does it reduce the risk How does it reduce between ULTILAYER and resistance to reflective of pavement deformation? construction time? For all Tarmac Contracting enquiries contact: conventional asphalt? cracking? Carefully designed aggregate In many cases ULTILAYER can ULTILAYER contains a high ULTILAYER’s improved flexibility grading in combination with be used as an alternative to full 01773 815 100 performance Polymer Modified means that it is less susceptible the Polymer Modified Binder depth construction. One layer Binder (PMB), which is used to cracking caused by movement provides very high rut resistance. of ULTILAYER can be used to MIDLANDS in combination with carefully in the ground beneath the replace both the surface and Mountsorrel Regional binder course, which virtually designed aggregate grading foundation course. 0116 264 8540 to provide a dense, high binder halves the construction time. content mix. This significantly improves both flexibility and durability. WALES Hendy Satellite 01443 227 552

What are the potential How long will it last? What technical support will What are the efficiency benefits? Every project is different. I receive? sustainability benefits? For contractors, less time on However, ULTILAYER has been Tarmac’s team of experts will ULTILAYER is manufactured site means lower labour and proven on some of the UK’s carry out a full site survey and using responsibly sourced equipment costs, whilst their busiest and most problematic recommend the most appropriate materials in accordance with customers benefit from longer- roads, including Oxford Street course of action to meet your BES 6001 standards. It is also SOUTH WEST Stancombe Satellite LONDON & SOUTH lasting roads that require less in London where it has been in requirements and budget. produced at lower temperatures 01275 464 441 Snodland Office maintenance. place for four years. than conventional asphalt, 0208 896 5760 saving energy and reducing carbon emissions. SBN/0220

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